If you mean the cheat codes and hints (No1), i think it is obvious. Have a look at this Link. While playing press ENTER and type the code. I haven't really try them but i don't think there will be a problem. Try them. Hope i helped

you just hit the enter key during game play, and put a + sign in front of the cheat. no spaces, on dashes if shown. then you hit enter again, once to enter the cheat, again to get rid of the consule. the deactivate the cheat, retype the cheat again, only this time with a - sign in place of the + sign.